Many marine invertebrate taxa are broadcast spawners, where multiple individuals release
their gametes into the water for external fertilization, often in the presence of gametes from …

There are two reasons why researchers are interested in the phenotypic relationship
between the expression of male secondary sexual characters (SSCs) and 'ejaculate …

As inbreeding is costly, it has been suggested that polyandry may evolve as a means to
reduce the negative fitness consequences of mating with genetically related males. While …

Genetic benefits from mate choice could be attained by choosing mates with high heritable
quality (“good genes”) and that are genetically compatible (“compatible genes”). We clarify …

Reproduction among related individuals is generally maladaptive. Inbreeding imposes
significant costs on individual reproductive success, and can decrease population fitness …

Socially monogamous female birds routinely mate with males outside the pair bond. Three
alternative hypotheses consider genetic benefits as the major driver behind the female …

Studying mate choice at the gamete level can provide valuable insights into proximate
mechanisms that underlie the evolution of mating systems. The objective was to assess …

Major histocompatibility complex (MHC) alleles likely have adaptive value because of
overdominance, in which case MHC heterozygous individuals have increased fitness …

When sperm compete to fertilize available ova, selection is expected to favour ejaculate
traits that contribute to a male's fertilization success. While there is much evidence to show …

Although classically thought to be rare, female polyandry is widespread and may entail
significant fitness benefits. If females store sperm over extended periods of time, the …